Hydraulic cylinder with flow guide mechanism

Abstract

The utility model discloses a hydraulic cylinder with a flow guide mechanism, which belongs to the technical field of hydraulic cylinders and comprises a cylinder barrel, cylinder covers are mounted at the left end and the right end of the cylinder barrel, a piston rod penetrates through the right sides of the cylinder covers, a piston body is arranged at the left end of the piston rod, a sealing component is arranged on the outer side of the piston body, and a piston head is arranged on the left side of the piston body. An oil inlet pipe is arranged below the left side of the cylinder barrel, an oil outlet pipe is arranged below the right side of the cylinder barrel, a sliding groove is formed in the left side of the cylinder barrel, empty grooves are formed in the upper portion and the lower portion of the sliding groove correspondingly, and buffer structures are arranged in the empty grooves. A first supporting frame is arranged in the oil inlet pipe, and a flow guide ring is rotationally connected to the upper portion of the first supporting frame. The second supporting frame is rotationally connected with a flow guide structure. The hydraulic cylinder with the flow guide mechanism has the advantages that the buffering performance is enhanced, the service life is prolonged, and the flow guide structure is optimized, is suitable for various industrial equipment needing the hydraulic cylinder, and is beneficial to improving the stability and reliability of equipment operation.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically to a hydraulic cylinder with a flow guiding mechanism. Background Technology

[0002] Hydraulic cylinders, as actuators in hydraulic systems, are considered the "power arms" of the industrial field. Their structure mainly includes components such as the cylinder barrel, piston, and piston rod. During operation, high-pressure hydraulic fluid is injected into the cylinder barrel, pushing the piston to perform reciprocating linear motion within the barrel, which in turn drives the connected piston rod to output powerful thrust or pull force. Whether it's the excavation action in heavy machinery or the precise positioning in automated production lines, hydraulic cylinders, with their advantages of high output force, smooth movement, and fast response speed, can efficiently convert hydraulic energy into mechanical energy, providing strong power support for the stable operation of various industrial equipment. However, existing hydraulic cylinders still have certain problems in use:

[0003] For example, a rapid-start hydraulic cylinder with application number 201120325458.6 has the following technical solution: it includes a cylinder body, a piston rod, and an oil supply controller installed on the cylinder body. The piston rod is hollow, forming a rod cavity, which is connected to a third oil port. The cylinder body is provided with a first oil port and a second oil port. The rapid-start hydraulic cylinder has two oil chambers. Under the control of the oil supply controller, the oil chamber in the rod cavity can realize the rapid extension of the piston rod during non-use strokes. The oil chamber corresponding to the second oil port can realize the steady operation of the piston rod. However, in terms of the oil circuit system of existing hydraulic cylinders, the oil inlet and outlet pipes of the hydraulic cylinder often lack reasonable guiding structures. When the equipment is running, the oil pipes are easily pulled and bent by external forces, resulting in obstructed oil flow, unstable pressure, and reduced working efficiency of the hydraulic cylinder. In the piston operation process, due to the lack of a buffer structure, the piston will generate strong impact and vibration when it moves back and forth at high speed to the end of the stroke, accelerating the wear of piston, cylinder and other components.

[0004] In view of this, in-depth research was conducted on the above issues, which led to the creation of this case.

[0005] To address the aforementioned issues, an innovative design was implemented based on the existing hydraulic cylinder. Utility Model Content

[0006] The purpose of this utility model is to provide a hydraulic cylinder with a flow guiding mechanism to solve the problems mentioned in the background art, such as the lack of guiding structure in the oil inlet and outlet pipes of the hydraulic cylinder and the lack of buffer structure in the piston.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A hydraulic cylinder with a flow guiding mechanism includes a cylinder barrel, cylinder heads installed at both ends of the cylinder barrel, a piston rod extending through the right side of the cylinder head, a piston body at the left end of the piston rod, a sealing assembly on the outside of the piston body, and a piston head on the left side of the piston body. An oil inlet pipe is located on the lower left side of the cylinder barrel, and an oil outlet pipe is located on the lower right side of the cylinder barrel. A sliding groove is formed on the left side of the cylinder barrel, and the piston head is slidably connected inside the sliding groove. Hollow slots are formed at both the top and bottom of the sliding groove, and buffer structures are provided inside the hollow slots. A first support frame is provided inside the oil inlet pipe, and a flow guiding ring is rotatably connected above the first support frame. A second support frame is provided inside the oil outlet pipe, and a flow guiding structure is rotatably connected to the second support frame.

[0009] Preferably, the internal buffer structure of the slot includes a spring and a buffer ball, and a spring is fixedly connected inside the slot near the outer end.

[0010] By adopting the above technical solution, the spring in the slot, as a key part of the buffer structure, can absorb part of the kinetic energy of the piston head when the piston head moves to a position close to the slot, thereby playing a buffering role, reducing the impact of the piston head on the cylinder, and extending the service life of the hydraulic cylinder.

[0011] Preferably, each spring is connected to and installed with a buffer ball near the end of the slide groove, and the spring is in a compressed state when the piston head contacts the buffer ball.

[0012] By adopting the above technical solution, the spring-connected buffer ball increases the contact area between the piston head and the buffer structure when the piston head contacts the buffer ball, making the buffering process smoother and further reducing the impact force generated when the piston head moves at high speed to the end of the stroke, thus protecting the contact parts between the piston head and the cylinder.

[0013] Preferably, the surface of the guide ring is provided with guide vanes, and the guide vanes are arranged in a curved spiral. The other side of the guide ring is provided with a rotating groove, and the guide ring is located inside the oil inlet pipe with the guide vanes facing upwards.

[0014] By adopting the above technical solution, the guide ring has guide vanes arranged in a curved spiral on its surface. In the oil inlet pipe, the guide vanes can guide the oil to form a spiral flow, increase the oil flow rate, improve the oil inlet efficiency, and at the same time make the oil enter the cylinder more evenly, which helps to improve the stability of the hydraulic cylinder operation.

[0015] Preferably, the internal flow guiding structure of the oil outlet pipe includes a flow guiding ring, and the flow guiding ring is located inside the oil outlet pipe with the flow guiding plate facing downward.

[0016] By adopting the above technical solution, the guide ring and guide vanes inside the oil outlet pipe face downwards. This structure can guide the oil to flow out smoothly, avoid the formation of turbulence in the oil outlet pipe, ensure the smooth flow of oil in the oil outlet pipe, improve the oil discharge efficiency, and thus improve the overall working efficiency of the hydraulic cylinder.

[0017] Preferably, the internal flow guiding structure of the oil outlet pipe includes a rotating ring, a horizontal frame, a vertical frame, and a flow guiding rod, and the rotating ring is rotatably connected to the second support frame, and the rotating ring is fixedly connected to the vertical frame through the horizontal frame.

[0018] The above technical solution incorporates a rotating ring, a horizontal frame, and a vertical frame inside the oil outlet pipe. The rotating ring is connected to the horizontal frame and the vertical frame to form a stable flow guiding structure, which provides support for the flow guiding rod and ensures that the flow guiding rod can stably perform its guiding function, allowing the oil to flow in an orderly manner within the oil outlet pipe.

[0019] Preferably, a guide rod is connected and installed on the outside of the vertical frame, and the guide rod has a spiral structure, with the spiral diameter of the guide rod decreasing from top to bottom.

[0020] By adopting the above technical solution, the guide rod with a spiral structure on the outside of the vertical frame and a decreasing spiral diameter can guide the oil to flow spirally downward in the oil outlet pipe, further enhancing the guiding effect on the oil, improving the speed and stability of oil discharge, and reducing the pressure loss in the oil outlet pipe.

[0021] Compared with the prior art, the beneficial effects of this utility model are: the hydraulic cylinder with a flow guiding mechanism,

[0022] 1. Enhanced buffering performance and extended service life: The buffer structure composed of springs and buffer balls in the slot effectively reduces the impact of the piston head on the cylinder when it moves to the end of its stroke, reduces the wear of components such as the piston and cylinder, and significantly extends the service life of the hydraulic cylinder.

[0023] 2. Optimize the flow guiding structure to improve working efficiency: The flow guiding structures such as the flow guiding rings and guide vanes in the oil inlet and outlet pipes, and the flow guiding rod in the oil outlet pipe, guide the oil to flow smoothly, reduce the oil flow resistance, and improve the oil inlet and outlet efficiency, thereby improving the overall working efficiency of the hydraulic cylinder. Attached Figure Description

[0024] Figure 1 This is a front sectional view of the present invention.

[0025] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0026] Figure 3 This is a schematic diagram of the flow guide ring structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the bottom structure of the guide ring of this utility model;

[0028] Figure 5 This is a front cross-sectional view of Embodiment 2 of the present invention;

[0029] Figure 6 This is a schematic diagram of the flow guiding structure in Embodiment 2 of this utility model.

[0030] In the diagram: 1. Cylinder barrel; 2. Cylinder head; 3. Piston rod; 4. Piston body; 5. Sealing assembly; 6. Piston head; 7. Slide groove; 8. Empty groove; 9. Spring; 10. Buffer ball; 11. Oil inlet pipe; 12. Oil outlet pipe; 13. First support frame; 14. Guide ring; 15. Guide vane; 16. Rotary groove; 17. Second support frame; 18. Rotating ring; 19. Horizontal frame; 20. Vertical frame; 21. Guide rod. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1

[0033] Please see Figure 1-4 This utility model provides a technical solution:

[0034] A hydraulic cylinder with a flow guiding mechanism includes a cylinder barrel 1, cylinder heads 2 installed at both ends of the cylinder barrel 1, a piston rod 3 extending through the right side of the cylinder head 2, a piston body 4 at the left end of the piston rod 3, a sealing assembly 5 on the outside of the piston body 4, a piston head 6 on the left side of the piston body 4, an oil inlet pipe 11 at the lower left side of the cylinder barrel 1, and an oil outlet pipe 12 at the lower right side of the cylinder barrel 1. A sliding groove 7 is opened on the left side of the cylinder barrel 1, and the piston head 6 is slidably connected to the inside of the sliding groove 7. Hollow grooves 8 are opened at both the top and bottom of the sliding groove 7, and a buffer structure is provided inside the hollow grooves 8. A first support frame 13 is provided inside the oil inlet pipe 11, and a flow guiding ring 14 is rotatably connected above the first support frame 13. A second support frame 17 is provided inside the oil outlet pipe 12, and a flow guiding structure is rotatably connected to the second support frame 17.

[0035] The internal buffer structure of the slot 8 includes a spring 9 and a buffer ball 10. The spring 9 is fixedly connected to the outer end of the slot 8, and the buffer ball 10 is connected to the end of the spring 9 near the slide groove 7. When the piston head 6 contacts the buffer ball 10, the spring 9 is in a compressed state. The spring 9 fixedly connected to the outer end of the slot 8 is compressed when the piston head 6 moves close, which can effectively buffer the impact force of the piston head 6, reduce the direct impact of the piston head 6 on the cylinder 1, thereby reducing the wear of the cylinder 1 and the piston head 6 and extending the service life of the hydraulic cylinder. When the piston head 6 contacts the buffer ball 10 connected to the spring 9, the buffer ball 10 can increase the contact area, making the buffering effect more uniform, avoiding excessive local force on the piston head 6, further protecting the piston head 6 and the cylinder 1, and ensuring the stability of the hydraulic cylinder operation.

[0036] The guide ring 14 has guide vanes 15 arranged in a curved spiral pattern on its surface. The other side of the guide ring 14 has a groove 16. The guide ring 14 is located inside the oil inlet pipe 11 with the guide vanes 15 facing upwards. The guide structure inside the oil outlet pipe 12 includes the guide ring 14, which is located inside the oil outlet pipe 12 with the guide vanes 15 facing downwards. The guide vanes 15 arranged in a curved spiral pattern on the surface of the guide ring 14 can guide the oil in the oil inlet pipe 11 to form a spiral flow, increase the flow rate of the oil when it enters the cylinder 1, improve the oil inlet efficiency, and allow the hydraulic cylinder to reach the working pressure faster, thereby improving working efficiency. The guide ring 14 and the guide vanes 15 facing downwards in the oil outlet pipe 12 can guide the oil to flow out in an orderly manner, prevent turbulence in the oil in the oil outlet pipe 12, ensure smooth oil flow in the oil outlet pipe 12, and avoid pressure instability caused by poor oil flow.

[0037] Example 2

[0038] Please see Figure 5-6 This utility model provides a technical solution:

[0039] The internal flow guiding structure of the oil outlet pipe 12 includes a rotating ring 18, a horizontal frame 19, a vertical frame 20, and a flow guide rod 21. The rotating ring 18 is rotatably connected to the second support frame 17, and the rotating ring 18 is fixedly connected to the vertical frame 20 through the horizontal frame 19. The flow guide rod 21 is connected and installed on the outside of the vertical frame 20. The flow guide rod 21 has a spiral structure, and the spiral diameter of the flow guide rod 21 decreases from top to bottom. The structure composed of the rotating ring 18, the horizontal frame 19, and the vertical frame 20 inside the oil outlet pipe 12 provides stable support for the flow guide rod 21, so that the flow guide rod 21 remains stable when rotating, thereby ensuring a stable and reliable flow guiding effect on the oil in the oil outlet pipe 12. The flow guide rod 21 with a spiral structure and a decreasing spiral diameter on the outside of the vertical frame 20 can play a good guiding role on the oil in the oil outlet pipe 12. As the oil flows downward, the gradually decreasing spiral diameter can further accelerate the oil outflow and improve the oil discharge efficiency.

[0040] Working principle:

[0041] In use, when high-pressure hydraulic fluid enters the cylinder 1 through the inlet pipe 11, the guide vanes 15 on the guide ring 14 inside the inlet pipe 11 guide the fluid to flow in a spiral shape, accelerating the fluid's entry into the cylinder 1 and making its distribution more uniform. This pushes the piston body 4 and piston head 6 to move to the right, and the piston rod 3 extends accordingly. During the movement of the piston head 6, when it approaches the left end of the cylinder 1, the piston head 6 contacts the buffer ball 10 and compresses the spring 9. The buffer structure composed of the spring 9 and the buffer ball 10 absorbs the kinetic energy of the piston head 6, reducing its impact on the cylinder 1. When the hydraulic cylinder needs to return oil, the fluid flows out from the right side of the cylinder 1 through the outlet pipe 12. The guide structure inside the outlet pipe 12 begins to function. If a guide ring 14 is used, its guide vanes 15 guide the fluid out; if a combination structure of a rotating ring 18, a horizontal frame 19, a vertical frame 20, and a guide rod 21 is used, the guide rod 21 guides the fluid to flow spirally downwards, allowing the fluid to be discharged smoothly and completing the working cycle of the hydraulic cylinder.

[0042] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder with a flow guide mechanism, comprising a cylinder barrel (1), a cylinder head (2) is installed at both left and right ends of the cylinder barrel (1), a piston rod (3) is provided through the right side of the cylinder head (2), a piston body (4) is provided at the left end of the piston rod (3), a sealing assembly (5) is provided outside the piston body (4), and a piston head (6) is provided at the left side of the piston body (4), an oil inlet pipe (11) is provided below the left side of the cylinder barrel (1), and an oil outlet pipe (12) is provided below the right side of the cylinder barrel (1), characterized in that: The cylinder (1) has a sliding groove (7) on its left side, and the piston head (6) is slidably connected to the inside of the sliding groove (7). The sliding groove (7) has empty grooves (8) on both the top and bottom, and the empty grooves (8) are equipped with a buffer structure. The oil inlet pipe (11) is equipped with a first support frame (13), and a guide ring (14) is rotatably connected above the first support frame (13). The oil outlet pipe (12) is equipped with a second support frame (17), and the second support frame (17) is rotatably connected with a guide structure.

2. A hydraulic cylinder with flow guiding means according to claim 1, characterized in that: The internal buffer structure of the slot (8) includes a spring (9) and a buffer ball (10), and the spring (9) is fixedly connected inside the slot (8) near the outer end.

3. A hydraulic cylinder with flow guiding means according to claim 2, characterized in that: Each spring (9) is connected to a buffer ball (10) near the end of the slide (7), and the spring (9) is in a compressed state when the piston head (6) contacts the buffer ball (10).

4. The hydraulic cylinder with flow guiding mechanism according to claim 1, characterized in that: The guide ring (14) has a guide plate (15) on its surface, and the guide plate (15) is arranged in a curved spiral. The other side of the guide ring (14) has a groove (16), and the guide ring (14) is located inside the oil inlet pipe (11) with the guide plate (15) facing upward.

5. A hydraulic cylinder with flow guiding means according to claim 4, characterized in that: The internal flow guiding structure of the oil outlet pipe (12) includes a flow guiding ring (14), and the flow guiding ring (14) is located inside the oil outlet pipe (12) with the flow guiding plate (15) facing downward.

6. The hydraulic cylinder with flow guiding mechanism according to claim 1, characterized in that: The internal flow guiding structure of the oil outlet pipe (12) includes a rotating ring (18), a horizontal frame (19), a vertical frame (20) and a flow guiding rod (21). The rotating ring (18) is rotatably connected to the second support frame (17), and the rotating ring (18) is fixedly connected to the vertical frame (20) through the horizontal frame (19).

7. A hydraulic cylinder with flow guiding means according to claim 6, characterized in that: A guide rod (21) is connected and installed on the outside of the vertical frame (20), and the guide rod (21) has a spiral structure, and the spiral diameter of the guide rod (21) decreases from top to bottom.

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